Powermaster 3G Style Ford Alternators are available in many configurations. They feature excellent output at idle and are internally regulated. You have a choice of a 6 or 8-groove serpentine pulleys, 120, 140, 155 and 200 amp output, OEM or one-wire hookup, and many mounting configurations. Also available with select part numbers are adapter harnesses to make for an easy upgrade to earlier Ford 1G (externally regulated) and 2G (internally regulated) alternators back to 1963. Made in U.S.A.